The novel hyperbranched poly(trimellitic glyceride) (PTG) starch plasticizer synthesized in our previous study was neutralized with different alkaline metal hydroxides. Mixed with starch, the effects of different alkaline metal cations, M+, on gelatinization of starch suspensions and thermal behaviors of the films were analyzed using RVA and DMA, respectively. The structures of the starch suspensions, films and freeze-dried samples (S/PTG-M) were investigated using DSC, XRD and FTIR spectroscopy, respectively. M+ increased the gelatinization temperature of starch suspensions in the order of S/PTG-Li > S/PTG-Na > S/PTG-K. The formation of a complex between M+ and starch in the films observed using FTIR spectroscopy improved the stability of the starch paste and gel, and increased the gel temperature of starch dispersions. The corresponding starch gel was relatively thermostable, but not shear-resistant. PTG decreased the Tg of starch films with different paired M+. PTG-Li and PTG-K, but not PTG-Na, strengthened the mechanical properties of starch films.

译文

:我们先前的研究中合成的新型超支化聚偏苯三酸甘油酯(PTG)淀粉增塑剂已用不同的碱金属氢氧化物中和。与淀粉混合,分别使用RVA和DMA分析了不同碱金属阳离子M对淀粉悬浮液糊化和薄膜热行为的影响。分别使用DSC,XRD和FTIR光谱研究了淀粉悬浮液,薄膜和冻干样品(S / PTG-M)的结构。 M以S / PTG-Li> S / PTG-Na> S / PTG-K的顺序增加淀粉悬浮液的糊化温度。使用FTIR光谱法观察到的膜中M和淀粉之间的络合物的形成改善了淀粉糊和凝胶的稳定性,并且提高了淀粉分散体的凝胶温度。相应的淀粉凝胶是相对热稳定的,但不是抗剪切的。 PTG降低了配对M对淀粉膜的Tg的影响。 PTG-Li和PTG-K而不是PTG-Na增强了淀粉膜的机械性能。

+1
+2
100研值 100研值 ¥99课程
检索文献一次
下载文献一次

去下载>

成功解锁2个技能,为你点赞

《SCI写作十大必备语法》
解决你的SCI语法难题!

技能熟练度+1

视频课《玩转文献检索》
让你成为检索达人!

恭喜完成新手挑战

手机微信扫一扫,添加好友领取

免费领《Endnote文献管理工具+教程》

微信扫码, 免费领取

手机登录

获取验证码
登录